{"id":3966,"date":"2021-11-11T14:37:04","date_gmt":"2021-11-11T13:37:04","guid":{"rendered":"https:\/\/www.agrimatco.ma\/ennemi\/rusts\/"},"modified":"2021-11-11T14:37:04","modified_gmt":"2021-11-11T13:37:04","slug":"rusts","status":"publish","type":"ennemi","link":"https:\/\/www.agrimatco.ma\/en\/ennemi\/rusts\/","title":{"rendered":"Rusts"},"content":{"rendered":"<h2 style=\"text-align: left;\"><strong>Sugar beet rust<\/strong><\/h2>\n<p><strong>Causal agent<\/strong> : This disease is caused by the fungus <em>Uromyces betae<\/em>, an Oomycete of the Pucciniaceae family.<\/p>\n<p><strong>Description :<\/strong><\/p>\n<ul>\n<li>Sugar beet rust is manifested by the presence of small pustules with a diameter of 1 mm and a yellow-orange color on both sides of the leaves and on the flower stalks.<\/li>\n<li>This species exhibits a structure called uredospores which are summer spores contained in rusty-red pustules on host plants. It also shows another structure called teliospores, which are darker in color, which are winter spores that keep the fungus from year to year.<\/li>\n<\/ul>\n<p><strong>Biology :<\/strong><\/p>\n<ul>\n<li>The development of the disease is favored by cool (15 \u00b0 C to 21 \u00b0 C) and humid weather.<\/li>\n<li>The <em>Uromyces betae<\/em> fungus does not require an alternate host to complete its life cycle.<\/li>\n<li>It overwinters on volunteer beets and in infected plant debris.<\/li>\n<li>The evolutionary cycle of rust has 5 kinds of fruiting bodies.<\/li>\n<li>It is especially the uredo-teliospore stages that are harmful.<\/li>\n<li>The disease is spread by wind, people and machines.<\/li>\n<\/ul>\n<p><strong>Symptoms :<\/strong><\/p>\n<ul>\n<li>Small reddish-brown spots (uredospores) are found on the surface of leaves, petioles and stems.<\/li>\n<li>A dark brown spore stage (teliospores) is sometimes found on the leaves towards the end of the growing season.<\/li>\n<li>Sometimes the disease destroys the foliage, making it difficult to pull beets.<\/li>\n<li>Sugar yield losses of up to 11% have been observed in field trials, researchers say, but the economic importance of beet rust is still debated.<\/li>\n<\/ul>\n<p><strong>Control :<\/strong><\/p>\n<ul>\n<li>The choice of sugar beet cultivars with tolerance to beet rust should be considered in an integrated disease management strategy.<\/li>\n<li>The choice of fungicides with different modes of action.<\/li>\n<li>Balanced plant nutrition.<\/li>\n<li>Chemical control: <strong>ACANTO PLUS<\/strong> at a dose of 0.5l \/ ha.<\/li>\n<\/ul>\n","protected":false},"featured_media":0,"template":"","class_list":["post-3966","ennemi","type-ennemi","status-publish","hentry"," nt-post-class"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.5 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Rusts - Agrimatco<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.agrimatco.ma\/en\/ennemi\/rusts\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rusts - Agrimatco\" \/>\n<meta property=\"og:description\" content=\"Sugar beet rust Causal agent : This disease is caused by the fungus Uromyces betae, an Oomycete of the Pucciniaceae family. 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